Lake Sammamish Half Marathon

Event details

The Brooks Lake Sammamish Half Marathon presented by REI takes place on March 7, 2026 in Redmond, Washington. The race is a point-to-point half marathon that runs along a fully paved interurban trail between Marymoor Park in Redmond and Lake Sammamish State Park in Issaquah. The course is described as flat. The race is chip-timed and includes a custom bib, participant shirt, and a finisher medal. Aid stations are located every few miles and provide Clif gels, Nuun and water. The finish area is at the beach and features food and music. The event is cupless; runners must bring a handheld bottle, wear a hydration pack, or use a reusable cup provided at the start. A half-marathon walk category is offered with a 4 hour time limit.

Events, entry and fees

• Half Marathon
• Virtual Half Marathon

The half marathon entry fee is listed at $88 and the price increases after December 31, 2025. The half marathon is open to ages 10 and older. The virtual half marathon fee is listed at $52; registration for the virtual event closes February 20, 2026 and a limited number of virtual entries are available. Virtual participants receive a shirt and medal that will be mailed after the in-person race, and may complete the distance all at once or in separate segments on a date of their choosing. Additional race fees include a $0.95 carbon offset, a King County Parks surcharge of 5%, and a $3.50 tariff fee. The race website is listed for further details. Visit the organization's website for the most recent information.

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